Underframe for cars.



' PATENTED SEPT. 10, 1907.

J. S. ANDREWS.

UNDERFRAME FOR CARS.

APPLICATION FILED mm: 1, 1901.

2 SHEETS-SHEET 1;

Q Q Q i No. 865,745. PATENTED' SEPT. 10, 1907.' J. S. ANDRBWSL UNDERFRAMH FOR CARS.

APPLICATION FILED mm 1, 1907. 2 SHEETBSHEET 2.

I 1%7'0 enior UNITED STATES PATENT orifice.

- .TA'MES s. ANnREwsfosnEw YORK, N. Y.

No. 865,745. I

composed of standard sections, consisting of steel cast- 'ings and bars.

Another object of the invention is toreduce the 'cost of manufacture, assembling and repairing by making the sections according to a comparatively few patterns, and so as to be interchangeable; and assembling them in a manner which will permit the sections to be easily replaced Inthe accompanying drawings I have illustrated one embodiment of the invention and referring thereto Figure 1 is a plan view. Fig. 2 is a longitudinal sec,- tional view on the line 22 of Fig. 1. Fig. 3 is an end view. Fig. 4 is a sectional view on the line 4A of Fig. 1. Fig. 5 is a sectional view on the. line 5-5 of Fig.1. -Fig. 6 is an enlarged detail sectional view.

Referring to the drawings, 7, 7are the side sills and 8, 8 are the end sills and these-sills may be made of a channel bars bolted together at their ends in a suitable ribs 10 at its top and bottom to overlap the end of the other section (Fig. 2). The outer ends 11 of the center I r sills are bolted to the draw-bar sills 12.

The center sill sections preferably consist of steel or semi-steel castings in I -form having a top flange 13 (Fig. 1), a bottom flange 14 and a connecting web 15 (Fig. 6). The 'Web 15 is provided at intervals with pockets 16, the sides 17 of which are flush with the edges of the flanges 13 and 14 and are braced by a central web 18. The sides 17 of. the pocketsare provided at the bottom with outwardly projecting supporting ribs 19 (Fig. 5).

4 The transoms 20 prefer E-ryconsist of castings each made in the general form of a channel bar with ahead plate 21 at each end extending laterally on each side of the web 20 to receive the bolts by which the transom is secured t the center sill and the side sills. The

and resting upon the ribs 19. I prefer to employ long bolts 22 which pass through the heads '21 and the UNDERFRAME.FOR CARS.

Specification of Letters Patent. Application filed June 1,1907. Serial No. 376,853.

. Patented Se t; 1o, 1907.

The draw-bar sill 12 consists of a" casting provided with an opening 23 toiec'eive thefdrawbar, and its at tachments and at its rear end thisjsillis preferably provided on its lower side with an integral center plafi 24. The draw-bar sill has a pocket25 with ribs-25 at the bottom of its sides to support the end transoms 26 i which abut against the sides of the pocket and are bolted thereto. A rib 25 at the rear of the pocket supports the end of'the center sill. These end transoms have cars 26' to each of which one end of a dia onal brace 27. is bolted, the other end of the brace being bolted to the end sill at or adjacent to its connection with the side sill. The floor 28 is laid on stringers. 29 which rest on the transoms and lie flush with the 'upper edges of the side sills.

The invention consists of comparatively few parts which are made of standard sizes and shapes so that like parts can be used interchangeably. Thus the two sections of thecenter sill are made alike and are interchangeable, and similarly the two-draw-ba'r sills, the two side'sills and the two end sills are interchangeable.

The transoms are made according to two patterns and those of each pattern are interchangeable.

The sections of the underframe are adaptedto be easily and quickly secured together in a strong and rigid manner and any section can be readily removed and repaired or replaced.

It will be observed that any one of the transoms 2O can be removed by'withdrawing the bolts and sliding it along lengthwise of theirame until it has cleared the pocket, at which'time its inner end will also have cleared the flanges 13 and the ribs 19 on the center'sill.

I have'referred herein to the use of bolts for fastening the parts together, but in many places'rivets can be used instead of the bolts.

What I claim and 'desire to secure by Letters Pat'- cut is: 4 p o '1. An under-frame for cars, comprising two cast steel draw-bar sills, there being rlbs on said sills, and a. cast steel center sill resting at its ends on said ribs and secured to the draw-bar sills.

2. An under-frame for cars, comprising two cast steel draw-bar slllsfhnd a cast steel center sill secured at its ends to said draw-bar sills, said center sill being made in two sections and having heads at their abutting ends, and means passing through said heads to secure said sections together. i

3. An under-frame for cars, comprising two cast steel draw-bar sllls; and acast steel center'slllsecured at its ends t'o salddraw-bar sills, said center slll being made in two sections and having heads at their abutting ends, and means passing through said heads to secure said sections together, there being ribs on one sectlon at the top and .tbe sides of said pockets being flush with the edges of said flanges, and transoms secured to the sides or the pockets.

5. An undertrame for cars, comprlslng a cast steel 6. .41 lqqdertreqmefor can cqn qgrlqlqg twoe'hgnnel skle sills, a cast steel I-shape cente n s'lll, the'r e -belng pgcketg.

- at 1i1tPVl1l lifs a lld; (f ange:- sill and the el des qtsalgl pockets being flush wlth the utel; edge thegeo t; and cast steel channel ta qnsggns l avlng ljeafi plates gt, their ends and secured tq sgltl sl d e sjllg 9,1111 to the sides ofthe gockets in qcep e i l,

7. An underframe tqr cats, comprising two side sllls. twb draw-lu u sills, there belpg a piocket 1p each, draw-bar; sillan 1- l ilis at the sides an g reax theqeot, a center Sill testing on thereag' pil s and: secuted to said drew-Ila: sills, and transom; resting on the side-fills and secured; to said 3 side sills gnddz iw-bar gills.

8. A n-u nglegttgme tprc2115, comprising two side sills,

.twd enjd' two dmw-bal -sllls, there being a-p'ocket ln' "egefijdm ba.r slll 5nd ll; at thesldee end: :eanthereqt, 4 cente; lllrrestlngpn, the reap ribs 811d secured to.aald' raw-bin. tpanapms resting on the-s'lde -rlbea-nd sequr t the drew-her: M le nd e s d 11a there being. ears 9n sglgftmnsqms, and braces secumiio Said eamen d: to the end slllg adjacent, their cozmectlon wlththe qlde 

